2011 Fiscal Year Final Research Report
Development of rear sonar using exhaust sound of automobile
| Project/Area Number |
21560454
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | Kinki University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Keywords | パワースペクトル / マイコン化 / リアソナー / リニアチャープ音 / 定在波 / 排気音 / 推定距離の補正 / 距離スペクトル |
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| Research Abstract |
The purpose of this study is to realize a rear-sonar of automobile for detecting obstacles(or targets) behind the automobile, using the exhaust sound of the automobile emitted from the automobile muffler. (1) We considered the fundamental properties and potentials of the distance estimation method based on the phase interference of audible sound. (2) We developed several methods, so as to reduce the error due to geometrical positions of the loudspeaker, target and microphone and the error due to the effect of the observation noise and measurement system. Furthermore, (3) we proposed a distance measurement method to measure the distance shorter than the minimum measurable distance.
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